Police say it happened in the backyard of a home in the 3900 block of Oregon around 7 p.m. Sunday.
The victim was sitting on the patio of the Broadway Oyster Bar at about 2 a.m. when a rolling gun battle went through the White Castle across the street.
The gunfire Tuesday killed one man and wounded another in the single-story rental home.
The child was shot in the legs during the shooting shortly after 11 p.m. in the 5900 block of Goodfellow.
St. Louis police say a store clerk pulled a gun on a cook.
The victim is expected to survive, and police say the suspects and the victim knew each other.
Festus Police Chief Tim Lewis says a man was shot in the bathroom.
Authorities say one person was shot by police after displaying a hand gun.
It appears that shots were meant for a man in a passing car who was struck in the back.
Police say the victims are in stable condition after being shot in the leg.